Injectors syncro/balance

[TheLegend]

good. tell him to leave them alone. like said.. how's he going to tune them or adjust them w out the correct equipment?  you don't just do it by ear. does have have a flow bench? if he's trying to eliminate a 'vibration' how is he determining which one is out of sync? hence the '4 afr' comment? 

being experienced and knowledgeable also would tell him to leave it alone.  Being experienced doesn't guarantee its been good experience. some people do things poorly for decades.

If he has to mess w them, tell him to get them cleaned, flow tested and put them back in. thats it.

That's exactly what he did: clean and put them back; he tried to help me and eliminate the simplest causes(dirt+syncro) because the engine runs a little stumbled too and yes they had dyno stand and etc, they have been dealers for 30 yrs for Kawa&Yamaha, they know what they do but for this RS they don't have the right soft and know-how; maybe my english isn't so good and I don't know how to expres myself technically good enough so, don't be so cruel. Thank you!